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TypeScript “this” scoping issue when called in jquery callback
...ers to forget to handle this context
Good: Typesafe in TypeScript
Good: No extra work if the function has parameters
Bad: Derived classes can't call base class methods written this way using super.
Bad: The exact semantics of which methods are "pre-bound" and which aren't create an additional non-ty...
Hidden Features of MySQL
...
Binary Protocol:
MySQL 4.1 introduced a binary protocol that allows non-string data values to be sent
and returned in native format without conversion to and from string format. (Very usefull)
Aside, mysql_real_query() is faster than mysql_query() because it does not call strlen()
to opera...
Test if string is a number in Ruby on Rails
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Create is_number? Method.
Create a helper method:
def is_number? string
true if Float(string) rescue false
end
And then call it like this:
my_string = '12.34'
is_number?( my_string )
# => true
Extend String Class.
If you want to be able to call is_number? directly on the string...
How to use OpenSSL to encrypt/decrypt files?
...bove!
-K key
The actual key to use: this must be represented as a string
comprised only of hex digits. If only the key is specified, the
IV must additionally be specified using the -iv option. When
both a key and a password are specified, the key given with the
-K option wi...
Getting realtime output using subprocess
...n an empty line, which does not evaluate as true. it only returns an empty string when the pipe closes, which will be when the subprocess terminates.
– Alice Purcell
Apr 9 '10 at 12:24
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How update the _id of one MongoDB Document?
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Using just ObjectId() without the string as parameter will generate a new unique one.
– Erik
Apr 30 '15 at 12:58
1
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How to replace captured groups only?
I have HTML code before and after the string:
5 Answers
5
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Using `textField:shouldChangeCharactersInRange:`, how do I get the text including the current typed
...e. To get the text after update use:
[textField2 setText:[textField1.text stringByReplacingCharactersInRange:range withString:string]];
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Get Enum from Description attribute [duplicate]
...static class EnumEx
{
public static T GetValueFromDescription<T>(string description) where T : Enum
{
foreach(var field in typeof(T).GetFields())
{
if (Attribute.GetCustomAttribute(field,
typeof(DescriptionAttribute)) is DescriptionAttribute attr...
Calling Python in Java?
...here by default')\nimport yourModule");
// execute a function that takes a string and returns a string
PyObject someFunc = interpreter.get("funcName");
PyObject result = someFunc.__call__(new PyString("Test!"));
String realResult = (String) result.__tojava__(String.class);
...